Table of Content
Beacon Log Files
Every 10 seconds the Faros software (http://www.dxatlas.com/faros/) completes one measurement. This measurement is logged in a Comma Separated Value (CSV) file. One file contains all the measurements of 24 hours. You can open this file in a spreadsheet or import it in a database.
- Time in UTC (http://en.wikipedia.org/wiki/Coordinated_Universal_Time\). Format = Hours:minutes:seconds.
- Band in MHz.
- Callsign of radio beacon station.
- Signal to Noise Ration (SNR) in dB.
- QSB index in %.
- Evidence. Indicates the probability, the signal came from this beacon. A logarithmic scale is used.
- Delay in milliseconds (ms).
You can find more information in the Faros user manual (German language, PDF, 547kB) (http://www.dxatlas.com/Faros/Files/Faros_PDF.zip).
SNR and Path Plots
Find a Signal to Noise Ratio and Path plot, from 2013 May 30 onwards.
Signal Noise Ratio plot
Five Years Open Radio Data
For five years now, in September 2016, our short-wave monitor station measures the strength of eighteen radio beacons of the Northern California DX Foundation (NCDXF). These NCDXF radio beacons transmit on 5 different bands, designated to ham operators, and are geographical arranged around the globe.
Apart from the graphical information, which the ham operators use to determine the real-time transmit or receive conditions in the direction of a certain region, we publish every month the raw measured data. There is now about 120MB available on the web server. This open data is available to anyone, and can be used for further propagation studies. It would be great if someone used it for a scientific study, not related to radio.
The equipment is with care maintained by Rens Schoones and Henry Boudewijns, from the Radio Amateurs group.
The site being 24/365 operational, has made a name for itself in the ham community.